| 摘要 |
The present technology relates to an apparatus for preventing an electric shock in the event of flooding and a method therefor, and provides an apparatus for preventing an electric shock in the event of flooding and a method therefor, which compensate for the difference in contact resistance due to the difference in surface area between exposed terminals of an electric device while using a neutral grounding method in a single-phase two-wire low-voltage power distribution system, so as to prevent the occurrence of leakage current. To this end, an apparatus for preventing an electric shock in the event of flooding according to an embodiment of the present invention may comprise: a transformer for supplying voltage using a neutral grounding method in a single-phase two-wire low-voltage power distribution system; an earth leakage circuit breaker connected to power output from the transformer; a current measurement unit for measuring the amount of current passing through the earth leakage circuit breaker; a control unit for calculating the contact resistance to be compensated for, using the amount of current from the current measurement unit, and transmitting a control signal corresponding thereto; and a contact resistance compensation unit for compensating for the contact resistance according to the control signal from the control unit. |
